(ふんじん)

ふんじん
noun
furious energy; great vigor
formalabstract
1. furious energy; great vigor (in action)
Energetic, all-out effort in action. Rarely used alone; appears almost exclusively in the four-character idiom 獅子(しし)奮迅(ふんじん) (charging like a lion).
He performed with lion-like energy.
He scored a goal with furious energy in the second half of the match.
Before the deadline, she finished the materials with the furious energy of a charging lion.

Almost never appears alone — learn it as part of 獅子(しし)奮迅(ふんじん) (charging like a lion), a four-character idiom (四字熟語(よじじゅくご)) praising someone for working or fighting with overwhelming intensity. Used in sports commentary, news headlines, and admiring descriptions of someone's effort.

Common collocations

Formal/literary register; less common in casual conversation than in writing.